Blower mechanism



i atented Dec. 27, 1927. 7

s ren srras ATENT oFFicE.

ROBERT C. OSGOOD, F GLAREMONT, NEW HAMIPSI-IIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, CORPORATION OF MASSACHUSETTS.

BLOWER MECHANISM.

Application filed September 12,1924. Serial No. 737,244.

This invention relates to a blower mechanism.

It has for its object to provide an improved air blower of a fan type. A further object is to provide improved means for driving the blower. Another object is to provide improved means. for allowing an. air actuated motor to drive said blower. A further object is to provide improved means for supporting certain of the essential elements for the operation of said motorQ More specifically, an object of my invention is to provide an improved base structure for the fan driving motor and within which certain of the essential motor operating elements are disposed and to also provide improved means for utilizing the exhaust fluid from the motor by directing the fluid'into the discharge of the blower mechanism.

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these drawings,

Fig. 1 is an endelevation of my device partly broken away to show details ofconstruction.

Fig. 2 is a longitudinal vertical section through the motor on line 22 of Fig. 1.

Fig. 3 is a detail sectional view of the 30 lubricator.

In the illustrative form of my invent-ion as disclosed in this application which discloses an improvement in certain respects upon the mechanism of my copending application Ser. No. 697,910, filed March 8, 1924-, I have shown afan type blowing mechanism 1 having a fan 2 rotatably mounted within a casing 3 which has a suitable inlet, (not shown) and an outlet 4, said casing being mounted upon a suitable support 5. Suitable means is provided for dri'vingthe fan 2 at a continuous rate of speed and comprises an air actuated motor 6 mounted upon a base '7 in turn carried upon a lateral extension S of the fan support 5. More speei-lh (rally, the motor comprises a plurality of overlapping bores 9 and 10 within which are mounted intern'ie-shing rotors 11 rotatably carried by end brackets 12 disposed transversely of the motor casing 6, of which the braedcet at the inner end 13 of said casing has a chamber 14 within which suitable reduction gearing is disposed. This reduction gearing comprises a pinion 15 fixed to one of the rotor shafts and meshing with an internal gear 16fixed upon a shaft 17 rotatably mounted within a removable end bracket 18 having an outwardly extending supporting arm 19 terminating adjacent the fan casing 3 to adequately support the fan 2 upon the outer end of the shaft 17.

The base 7 for the motor comprises a substantially flatrectangular shaped member having chambers formed therein one of which comprises an oil chamber 20 within which an automatic lubricator 21 is disposed. This lubricator comprises an in wardly proj eeting member 22 threadedly connect-ed to the upper side of the base 7 and having reduced and enlarged bores 23 and 24 formed therein. Beciprocably mounted within the reduced bore 28 is a plunger 25 having a transverse pin 26 adapted to engage the lower end ofthe member 22 while on the other end is formed a head 27 adapted toengage the shoulder formed at the juncture of the bores23 and 24 and to also engages. spring 28 held in positionby a plug 29 threaded inthe handle portion SO-of the lubri'cator to facilitate removal thereof from the casing'T. Projecting downwardly from the stem 25 is a reduced valvular member 31 adapted to control flow of lubricant through a conical shaped port 32 which leads to a horizontal passage 83 which in turn communicates with a live air conducting passage 34 leading from a pressure chamber 35. A suitable screen 36 covers said chamber to prevent foreign matter gaining access to the motor to which live airis supplied as through a supply conduit 87 removably secured to the base 7 adjacent the chamber as by an end plate 38. Leading upwardly from the live air fluid passage 34 is a supply passage 89 which communicates with a passage 40 formed in the lower central portion of the motor casing 6 and which terminates adjacent the teeth or piston forming elements of the rotors 11 at a point substantially midway between the ends of the rotors. It is to be understood that these rotors are of the spiral tooth type having chambers which expand longitudinally of the rotors and permit exhaust of fluid at the ends thereof into exhaust chambers 41 which have communication as through passages 42 and 43 with a suitable exhaust pipe 44 terminating, as at 45, in the blower casing so as to discharge substantially directly in alinement with the discharge opening 4. A passage 46 leads from the passage 89 to the upper portion of. the lubricant reservoir 20. The motor, base,

and supportcan be held together by any suit able means such as bolts or screws 47.

In the operation 01 my device live fluid pressure flowing through passage 34 will aetuate the rotors 11 and consequently the fan 2 and lubricant will be supplied to the various operating parts as by live pressure fluid acting upon the upper surface of the oil as through the passage &6 which will conse quently presson the lower surface of the plunger to move the same upwardly against the tension of the spring to thereby uncover the port 3:2 and allow flow oit lubricant by gravity from the reservoir to the horizontal passage 33 and thence to the vertical passage 39 to be thereby carried up with the flow o't' actuating fluid to the rotors.

It will thus be seen that I have provided an extremely simple meanstor supporting a motor upon a blower frame and which means includes the essential elements for the operation ot the motor and the tan together. Such amotor base arrangement as mine thereby eliminatesthe necessity ct building a special type of motor casing and permits a motor of standard construction to be used for such work.

While I have in this application specifically described one term which my invention may assume in practice, it will'be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

l. A blower mechanism comprising a blower for discharging a relatively large volume of air, an air actuated motor therefor, and means for conducting the exhaustfluid from said motor to the discharge of said blower, said means discharging substantially in alinement with the blower discharge. 2. i i blower mechanism comprisin a blower having a fan for discharging a substantially constant volume of air normally under pressure above atmospheric,an air ac tuated motor therefor and means for conducting the exhaust fluid. therefrom substanti ally tan entially to said fan to augment the blower t'uscharge.

3. A blower mechanism comprising a blower impeller mechanism having a casing an air actuated motor therefor, and means for conducting the exhaust fluid therefrom to within said using, said means discharging substantially in alincment with the blower discharge. i V r 4:! A blower niechanism-comprising a "fan blower, a fluid pressure motor for actuating the same, a base for detachably supporting saidmotor and having an exhaust passage therein. and means for conducting exhaust fluid from said base into the discharge of said blower.

in testimony whereof I aitiir my signature.

ROBERT o. oseoon. 

